A comparison on FCR in fish ponds of rainbow trout (Oncorhynchus mykiss) fed by extruder food and pellet food
Food costs in rainbow trout farms are about 50% of production costs (Barrows et al., 2007). Because of inattention of most aquaculturists in exact calculation of FCR and not using qualified food, sometimes food costs will rise a lot and won't be economical. The newest method for fish food production is production during the process of extrusion. Extrusion process is processing materials with high temperature in a short time (HTST) and is done by combined operation of humidity, heat, mechanical energy and pressure (Watanabe and Pongmaneerat, 1993).
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| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2014
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| Subjects: | Aquaculture, Fisheries, FCR, Rainbow trout, Extruder food, Pellete food, Iran, Oncorhynchus mykiss, Comparision, |
| Online Access: | http://hdl.handle.net/1834/37459 |
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| Summary: | Food costs in rainbow trout farms are about 50% of production costs (Barrows et al., 2007). Because of inattention of most aquaculturists in exact calculation of FCR and not using qualified food, sometimes food costs will rise a lot and won't be economical. The newest method for fish food production is production during the process of extrusion. Extrusion process is processing materials with high temperature in a short time (HTST) and is done by combined operation of humidity, heat, mechanical energy and pressure (Watanabe and Pongmaneerat, 1993). |
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